Prepapillary Arterial Loop Associated with Central Retinal Artery Occlusion: A Case Report.

PURPOSE: To report a case of central retinal artery (CRA) occlusion secondary to prepapillary loop in a 13-year-old girl.

METHODS

A 13-year-old girl presented with a history of sudden visual loss in her left eye.

RESULTS

Fundus examination confirmed thrombosis in a prepapillary arterial loop causing CRA occlusion and extensive retinal ischemia. Macular region was watered by an anomalous macular branch, which explained her 20/20 vision central vision.

CONCLUSION

Congenital prepapillary vascular loops are rare and usually asymptomatic. We report a case of central artery occlusion confirmed by multimodal imaging.